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FZK - Fusion KIT - Die Kooperation von Forschungszentrum Karlsruhe GmbH und Universität Karlsruhe...

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FZK - Fusion KIT - Die Kooperation von Forschungszentrum Karlsruhe GmbH und Universität Karlsruhe (TH) Design and testing of the ITER ECRH Upper Launcher ECHULA (ECH UpperLauncher) partners: 1 | 5 th IAEA Tech. Meeting on ECRH – Gandhinagar 18-20 Feb 09 A. Vaccaro et al. Fluid dynamics and thermal analysis For the ITER ECH Upper Launcher A. Vaccaro a , R. Heidinger a , W. Leonhardt b , A. Meier a , D. Mellein b , T. Scherer a , A.Serikov c , P. Späh a , D. Strauß a Forschungszentrum Karlsruhe, Association FZK-Euratom a) Institute for Materials Research b) Institute for Pulsed Power and Microwave Technology c) Institute for Reactor Safety 5 5 th th IAEA Technical Meeting on ECRH IAEA Technical Meeting on ECRH Gandhinagar – 18-20 February 2009 Gandhinagar – 18-20 February 2009
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Page 1: FZK - Fusion KIT - Die Kooperation von Forschungszentrum Karlsruhe GmbH und Universität Karlsruhe (TH) Design and testing of the ITER ECRH Upper Launcher.

FZK - Fusion

KIT - Die Kooperation von

Forschungszentrum Karlsruhe GmbH

und Universität Karlsruhe (TH)

Design and testing of theITER ECRH Upper Launcher

ECHULA (ECH UpperLauncher) partners:

1 | 5th IAEA Tech. Meeting on ECRH – Gandhinagar 18-20 Feb 09

A. Vaccaro et al.

Fluid dynamics and thermal analysisFor the ITER ECH Upper Launcher

A. Vaccaroa, R. Heidingera, W. Leonhardtb, A. Meiera,D. Melleinb, T. Scherera, A.Serikovc, P. Späha, D. Straußa

Forschungszentrum Karlsruhe, Association FZK-Euratoma) Institute for Materials Research b) Institute for Pulsed Power and Microwave Technologyc) Institute for Reactor Safety

55thth IAEA Technical Meeting on ECRH IAEA Technical Meeting on ECRHGandhinagar – 18-20 February 2009Gandhinagar – 18-20 February 2009

Page 2: FZK - Fusion KIT - Die Kooperation von Forschungszentrum Karlsruhe GmbH und Universität Karlsruhe (TH) Design and testing of the ITER ECRH Upper Launcher.

KIT - Die Kooperation von

Forschungszentrum Karlsruhe GmbH

und Universität Karlsruhe (TH)

The Upper Launcher in The Upper Launcher in ITERITER

BSM

Flangeconnection

Socket

Launcher Back-end

Main structure

Support Flange

Main Frame

Closure Plate

2 | 5th IAEA Tech. Meeting on ECRH – Gandhinagar 18-20 Feb 09

A. Vaccaro et al.

Page 3: FZK - Fusion KIT - Die Kooperation von Forschungszentrum Karlsruhe GmbH und Universität Karlsruhe (TH) Design and testing of the ITER ECRH Upper Launcher.

KIT - Die Kooperation von

Forschungszentrum Karlsruhe GmbH

und Universität Karlsruhe (TH)

The Blanket Shield Module in the UPPThe Blanket Shield Module in the UPP

Front flange

Rear flange

Bolts are used to connectthe Blanket Shield Moduleto the mainframe of the UPP

3 | 5th IAEA Tech. Meeting on ECRH – Gandhinagar 18-20 Feb 09

A. Vaccaro et al.

Page 4: FZK - Fusion KIT - Die Kooperation von Forschungszentrum Karlsruhe GmbH und Universität Karlsruhe (TH) Design and testing of the ITER ECRH Upper Launcher.

KIT - Die Kooperation von

Forschungszentrum Karlsruhe GmbH

und Universität Karlsruhe (TH)

Modelling Modelling OverviewOverview

EM Analysis (FEM) CFD Analysis (MCNP+Finite diff.)

Mech. Loads

Thermal Loads

4 | 5th IAEA Tech. Meeting on ECRH – Gandhinagar 18-20 Feb 09

A. Vaccaro et al.

Page 5: FZK - Fusion KIT - Die Kooperation von Forschungszentrum Karlsruhe GmbH und Universität Karlsruhe (TH) Design and testing of the ITER ECRH Upper Launcher.

KIT - Die Kooperation von

Forschungszentrum Karlsruhe GmbH

und Universität Karlsruhe (TH)

Corner prototype and LHT facilityCorner prototype and LHT facility

The corner prototype is installed in the Launcher Handling Test facility at FZK.An active circuit provides feedwater at imposed temperature, pressure and mass flow rate.

Thermocouples

Graphite paint

5 | 5th IAEA Tech. Meeting on ECRH – Gandhinagar 18-20 Feb 09

A. Vaccaro et al.

Page 6: FZK - Fusion KIT - Die Kooperation von Forschungszentrum Karlsruhe GmbH und Universität Karlsruhe (TH) Design and testing of the ITER ECRH Upper Launcher.

KIT - Die Kooperation von

Forschungszentrum Karlsruhe GmbH

und Universität Karlsruhe (TH)

Shock cooling experimentShock cooling experiment

The same (ideal) event is simulated by CFD analysis. The comparison between the simulation and the experiment will provide information about the validity of the model.

The prototype is heated up to 95°C. When the equilibrium is reached, water at 25°C starts flowing into the cooling channel.The temperature is monitored by the thermocouples and IR imaging.

6 | 5th IAEA Tech. Meeting on ECRH – Gandhinagar 18-20 Feb 09

A. Vaccaro et al.

Page 7: FZK - Fusion KIT - Die Kooperation von Forschungszentrum Karlsruhe GmbH und Universität Karlsruhe (TH) Design and testing of the ITER ECRH Upper Launcher.

KIT - Die Kooperation von

Forschungszentrum Karlsruhe GmbH

und Universität Karlsruhe (TH)

CFD Model – The „frozen“ approachCFD Model – The „frozen“ approach

- Constant properties are assumed.- Steady state analysis to asses the flow field and transport properties- Transient analysis performed solving only the energy equation.- Computation time reduced from 1.5 weeks to few hours

7 | 5th IAEA Tech. Meeting on ECRH – Gandhinagar 18-20 Feb 09

A. Vaccaro et al.

Page 8: FZK - Fusion KIT - Die Kooperation von Forschungszentrum Karlsruhe GmbH und Universität Karlsruhe (TH) Design and testing of the ITER ECRH Upper Launcher.

KIT - Die Kooperation von

Forschungszentrum Karlsruhe GmbH

und Universität Karlsruhe (TH)

Wall temperatures. ThermocouplesWall temperatures. Thermocouples

The curves show a good prediction of the heat exchange.

The delays between the curves are determined by the real trends of the inflow.

8 | 5th IAEA Tech. Meeting on ECRH – Gandhinagar 18-20 Feb 09

A. Vaccaro et al.

Page 9: FZK - Fusion KIT - Die Kooperation von Forschungszentrum Karlsruhe GmbH und Universität Karlsruhe (TH) Design and testing of the ITER ECRH Upper Launcher.

KIT - Die Kooperation von

Forschungszentrum Karlsruhe GmbH

und Universität Karlsruhe (TH)

Wall temperatures – IR imagingWall temperatures – IR imaging

9 | 5th IAEA Tech. Meeting on ECRH – Gandhinagar 18-20 Feb 09

A. Vaccaro et al.

Page 10: FZK - Fusion KIT - Die Kooperation von Forschungszentrum Karlsruhe GmbH und Universität Karlsruhe (TH) Design and testing of the ITER ECRH Upper Launcher.

KIT - Die Kooperation von

Forschungszentrum Karlsruhe GmbH

und Universität Karlsruhe (TH)

Heat loads on the corner of the BSMHeat loads on the corner of the BSM

Volumetric heat loads range from1.6 to 3 MW/m3

The model is divided into several sectorsto take into account of the non-constantheat deposition in the steel andIn the water (30-60%!)

10 | 5th IAEA Tech. Meeting on ECRH – Gandhinagar 18-20 Feb 09

A. Vaccaro et al.

Page 11: FZK - Fusion KIT - Die Kooperation von Forschungszentrum Karlsruhe GmbH und Universität Karlsruhe (TH) Design and testing of the ITER ECRH Upper Launcher.

KIT - Die Kooperation von

Forschungszentrum Karlsruhe GmbH

und Universität Karlsruhe (TH)

Nuclear heating – Steady state studyNuclear heating – Steady state study

twater = 11°CG = 4.5kg/sP = 138kW

High values on the flange

But

The steady-state scenario is not realistic.

The power production in ITER is pulsed.

11 | 5th IAEA Tech. Meeting on ECRH – Gandhinagar 18-20 Feb 09

A. Vaccaro et al.

Page 12: FZK - Fusion KIT - Die Kooperation von Forschungszentrum Karlsruhe GmbH und Universität Karlsruhe (TH) Design and testing of the ITER ECRH Upper Launcher.

KIT - Die Kooperation von

Forschungszentrum Karlsruhe GmbH

und Universität Karlsruhe (TH)

Nuclear heating – Transient study 1Nuclear heating – Transient study 1

The simulation is performed over 9 successive power cycles each one with 500 s power on followed by 1500 s power off.

12 | 5th IAEA Tech. Meeting on ECRH – Gandhinagar 18-20 Feb 09

A. Vaccaro et al.

Page 13: FZK - Fusion KIT - Die Kooperation von Forschungszentrum Karlsruhe GmbH und Universität Karlsruhe (TH) Design and testing of the ITER ECRH Upper Launcher.

KIT - Die Kooperation von

Forschungszentrum Karlsruhe GmbH

und Universität Karlsruhe (TH)

Nuclear heating – Transient study 2Nuclear heating – Transient study 2

13 | 4-5 Feb 2009

A. Vaccaro

Page 14: FZK - Fusion KIT - Die Kooperation von Forschungszentrum Karlsruhe GmbH und Universität Karlsruhe (TH) Design and testing of the ITER ECRH Upper Launcher.

KIT - Die Kooperation von

Forschungszentrum Karlsruhe GmbH

und Universität Karlsruhe (TH)

Nuclear heating – Transient study 2Nuclear heating – Transient study 2

t=0 t=250 t=500

t=1000 t=1500

14 | 5th IAEA Tech. Meeting on ECRH – Gandhinagar 18-20 Feb 09

A. Vaccaro et al.

Page 15: FZK - Fusion KIT - Die Kooperation von Forschungszentrum Karlsruhe GmbH und Universität Karlsruhe (TH) Design and testing of the ITER ECRH Upper Launcher.

KIT - Die Kooperation von

Forschungszentrum Karlsruhe GmbH

und Universität Karlsruhe (TH)

Outlook: extension to the complete cooling circuitOutlook: extension to the complete cooling circuit

Front flange

Rear flange

First Wall Panel

By this simulation the temperaturedistribution in the whole connecting flanges of the BSM can be calculated.This result is needed for the design of the bolted connection.

15 | 5th IAEA Tech. Meeting on ECRH – Gandhinagar 18-20 Feb 09

A. Vaccaro et al.

Page 16: FZK - Fusion KIT - Die Kooperation von Forschungszentrum Karlsruhe GmbH und Universität Karlsruhe (TH) Design and testing of the ITER ECRH Upper Launcher.

KIT - Die Kooperation von

Forschungszentrum Karlsruhe GmbH

und Universität Karlsruhe (TH)

ConclusionConclusion

The Blanket Shield Module in the UPP is a challenging component due to the high thermal and mechanical loads to which it is subjected.

The shock-cooling experiments on the corner prototype and the CFD simulation presented in this paper are used as instrument to verify the efficacy of the cooling system.

The results also show that the cooling system is able to cool efficiently the walls and the flange of the BSM, when the nuclear heat production and the pulsed operation of the ITER reactor are taken into account.

Modelling is a necessary tool for the design of some key features of the UPP, like the bolted connection of the BSM and the fixation of the entire structure to the Upper Port.

16 | 5th IAEA Tech. Meeting on ECRH – Gandhinagar 18-20 Feb 09

A. Vaccaro et al.


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